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/*
* Motion Eye video4linux driver for Sony Vaio PictureBook
*
* Copyright (C) 2001 Stelian Pop <stelian.pop@fr.alcove.com>, Alcôve
*
* Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
*
* Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
*
* Some parts borrowed from various video4linux drivers, especially
* bttv-driver.c and zoran.c, see original files for credits.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/videodev.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/wrapper.h>
#include <linux/interrupt.h>
#include <linux/vmalloc.h>
#include "meye.h"
#include "linux/meye.h"
/* driver structure - only one possible */
static struct meye meye;
/* number of grab buffers */
static unsigned int gbuffers = 2;
/* size of a grab buffer */
static unsigned int gbufsize = MEYE_MAX_BUFSIZE;
/* /dev/videoX registration number */
static int video_nr = -1;
/****************************************************************************/
/* Queue routines */
/****************************************************************************/
/* Inits the queue */
static inline void meye_initq(struct meye_queue *queue) {
queue->head = queue->tail = 0;
queue->len = 0;
queue->s_lock = (spinlock_t)SPIN_LOCK_UNLOCKED;
init_waitqueue_head(&queue->proc_list);
}
/* Pulls an element from the queue */
static inline int meye_pullq(struct meye_queue *queue) {
int result;
unsigned long flags;
spin_lock_irqsave(&queue->s_lock, flags);
if (!queue->len) {
spin_unlock_irqrestore(&queue->s_lock, flags);
return -1;
}
result = queue->buf[queue->head];
queue->head++;
queue->head &= (MEYE_QUEUE_SIZE - 1);
queue->len--;
spin_unlock_irqrestore(&queue->s_lock, flags);
return result;
}
/* Pushes an element into the queue */
static inline void meye_pushq(struct meye_queue *queue, int element) {
unsigned long flags;
spin_lock_irqsave(&queue->s_lock, flags);
if (queue->len == MEYE_QUEUE_SIZE) {
/* remove the first element */
queue->head++;
queue->head &= (MEYE_QUEUE_SIZE - 1);
queue->len--;
}
queue->buf[queue->tail] = element;
queue->tail++;
queue->tail &= (MEYE_QUEUE_SIZE - 1);
queue->len++;
spin_unlock_irqrestore(&queue->s_lock, flags);
}
/* Tests if the queue is empty */
static inline int meye_emptyq(struct meye_queue *queue, int *elem) {
int result;
unsigned long flags;
spin_lock_irqsave(&queue->s_lock, flags);
result = (queue->len == 0);
if (!result && elem)
*elem = queue->buf[queue->head];
spin_unlock_irqrestore(&queue->s_lock, flags);
return result;
}
/****************************************************************************/
/* Memory allocation routines (stolen from bttv-driver.c) */
/****************************************************************************/
#define MDEBUG(x) do {} while (0)
/* #define MDEBUG(x) x */
/* Given PGD from the address space's page table, return the kernel
* virtual mapping of the physical memory mapped at ADR.
*/
static inline unsigned long uvirt_to_kva(pgd_t *pgd, unsigned long adr) {
unsigned long ret = 0UL;
pmd_t *pmd;
pte_t *ptep, pte;
if (!pgd_none(*pgd)) {
pmd = pmd_offset(pgd, adr);
if (!pmd_none(*pmd)) {
ptep = pte_offset(pmd, adr);
pte = *ptep;
if(pte_present(pte)) {
ret = (unsigned long)page_address(pte_page(pte));
ret |= (adr & (PAGE_SIZE - 1));
}
}
}
MDEBUG(printk("uv2kva(%lx-->%lx)\n", adr, ret));
return ret;
}
static inline unsigned long uvirt_to_bus(unsigned long adr) {
unsigned long kva, ret;
kva = uvirt_to_kva(pgd_offset(current->mm, adr), adr);
ret = virt_to_bus((void *)kva);
MDEBUG(printk("uv2b(%lx-->%lx)\n", adr, ret));
return ret;
}
static inline unsigned long kvirt_to_bus(unsigned long adr) {
unsigned long va, kva, ret;
va = VMALLOC_VMADDR(adr);
kva = uvirt_to_kva(pgd_offset_k(va), va);
ret = virt_to_bus((void *)kva);
MDEBUG(printk("kv2b(%lx-->%lx)\n", adr, ret));
return ret;
}
/* Here we want the physical address of the memory.
* This is used when initializing the contents of the
* area and marking the pages as reserved.
*/
static inline unsigned long kvirt_to_pa(unsigned long adr) {
unsigned long va, kva, ret;
va = VMALLOC_VMADDR(adr);
kva = uvirt_to_kva(pgd_offset_k(va), va);
ret = __pa(kva);
MDEBUG(printk("kv2pa(%lx-->%lx)\n", adr, ret));
return ret;
}
static void *rvmalloc(signed long size) {
void *mem;
unsigned long adr, page;
mem = vmalloc_32(size);
if (mem) {
memset(mem, 0, size); /* Clear the ram out, no junk to the user */
adr = (unsigned long)mem;
while (size > 0) {
page = kvirt_to_pa(adr);
mem_map_reserve(virt_to_page(__va(page)));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
}
return mem;
}
static void rvfree(void * mem, signed long size) {
unsigned long adr, page;
if (mem) {
adr = (unsigned long) mem;
while (size > 0) {
page = kvirt_to_pa(adr);
mem_map_unreserve(virt_to_page(__va(page)));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
vfree(mem);
}
}
/* return a page table pointing to N pages of locked memory */
static void *ptable_alloc(int npages, u32 *pt_addr) {
int i;
void *vmem;
u32 *ptable;
unsigned long adr;
vmem = rvmalloc((npages + 1) * PAGE_SIZE);
if (!vmem)
return NULL;
adr = (unsigned long)vmem;
ptable = (u32 *)(vmem + npages * PAGE_SIZE);
for (i = 0; i < npages; i++) {
ptable[i] = (u32) kvirt_to_bus(adr);
adr += PAGE_SIZE;
}
*pt_addr = (u32) kvirt_to_bus(adr);
return vmem;
}
static void ptable_free(void *vmem, int npages) {
rvfree(vmem, (npages + 1) * PAGE_SIZE);
}
/****************************************************************************/
/* JPEG tables at different qualities to load into the VRJ chip */
/****************************************************************************/
/* return a set of quantisation tables based on a quality from 1 to 10 */
static u16 *jpeg_quantisation_tables(int *size, int quality) {
static u16 tables0[] = {
0xdbff, 0x4300, 0xff00, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff,
0xdbff, 0x4300, 0xff01, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff,
};
static u16 tables1[] = {
0xdbff, 0x4300, 0x5000, 0x3c37, 0x3c46, 0x5032, 0x4146, 0x5a46,
0x5055, 0x785f, 0x82c8, 0x6e78, 0x786e, 0xaff5, 0x91b9, 0xffc8,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff,
0xdbff, 0x4300, 0x5501, 0x5a5a, 0x6978, 0xeb78, 0x8282, 0xffeb,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0xffff,
};
static u16 tables2[] = {
0xdbff, 0x4300, 0x2800, 0x1e1c, 0x1e23, 0x2819, 0x2123, 0x2d23,
0x282b, 0x3c30, 0x4164, 0x373c, 0x3c37, 0x587b, 0x495d, 0x9164,
0x9980, 0x8f96, 0x8c80, 0xa08a, 0xe6b4, 0xa0c3, 0xdaaa, 0x8aad,
0xc88c, 0xcbff, 0xeeda, 0xfff5, 0xffff, 0xc19b, 0xffff, 0xfaff,
0xe6ff, 0xfffd, 0xfff8,
0xdbff, 0x4300, 0x2b01, 0x2d2d, 0x353c, 0x763c, 0x4141, 0xf876,
0x8ca5, 0xf8a5, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8, 0xf8f8,
0xf8f8, 0xf8f8, 0xfff8,
};
static u16 tables3[] = {
0xdbff, 0x4300, 0x1b00, 0x1412, 0x1417, 0x1b11, 0x1617, 0x1e17,
0x1b1c, 0x2820, 0x2b42, 0x2528, 0x2825, 0x3a51, 0x303d, 0x6042,
0x6555, 0x5f64, 0x5d55, 0x6a5b, 0x9978, 0x6a81, 0x9071, 0x5b73,
0x855d, 0x86b5, 0x9e90, 0xaba3, 0xabad, 0x8067, 0xc9bc, 0xa6ba,
0x99c7, 0xaba8, 0xffa4,
0xdbff, 0x4300, 0x1c01, 0x1e1e, 0x2328, 0x4e28, 0x2b2b, 0xa44e,
0x5d6e, 0xa46e, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4, 0xa4a4,
0xa4a4, 0xa4a4, 0xffa4,
};
static u16 tables4[] = {
0xdbff, 0x4300, 0x1400, 0x0f0e, 0x0f12, 0x140d, 0x1012, 0x1712,
0x1415, 0x1e18, 0x2132, 0x1c1e, 0x1e1c, 0x2c3d, 0x242e, 0x4932,
0x4c40, 0x474b, 0x4640, 0x5045, 0x735a, 0x5062, 0x6d55, 0x4556,
0x6446, 0x6588, 0x776d, 0x817b, 0x8182, 0x604e, 0x978d, 0x7d8c,
0x7396, 0x817e, 0xff7c,
0xdbff, 0x4300, 0x1501, 0x1717, 0x1a1e, 0x3b1e, 0x2121, 0x7c3b,
0x4653, 0x7c53, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c, 0x7c7c,
0x7c7c, 0x7c7c, 0xff7c,
};
static u16 tables5[] = {
0xdbff, 0x4300, 0x1000, 0x0c0b, 0x0c0e, 0x100a, 0x0d0e, 0x120e,
0x1011, 0x1813, 0x1a28, 0x1618, 0x1816, 0x2331, 0x1d25, 0x3a28,
0x3d33, 0x393c, 0x3833, 0x4037, 0x5c48, 0x404e, 0x5744, 0x3745,
0x5038, 0x516d, 0x5f57, 0x6762, 0x6768, 0x4d3e, 0x7971, 0x6470,
0x5c78, 0x6765, 0xff63,
0xdbff, 0x4300, 0x1101, 0x1212, 0x1518, 0x2f18, 0x1a1a, 0x632f,
0x3842, 0x6342, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363, 0x6363,
0x6363, 0x6363, 0xff63,
};
static u16 tables6[] = {
0xdbff, 0x4300, 0x0d00, 0x0a09, 0x0a0b, 0x0d08, 0x0a0b, 0x0e0b,
0x0d0e, 0x130f, 0x1520, 0x1213, 0x1312, 0x1c27, 0x171e, 0x2e20,
0x3129, 0x2e30, 0x2d29, 0x332c, 0x4a3a, 0x333e, 0x4636, 0x2c37,
0x402d, 0x4157, 0x4c46, 0x524e, 0x5253, 0x3e32, 0x615a, 0x505a,
0x4a60, 0x5251, 0xff4f,
0xdbff, 0x4300, 0x0e01, 0x0e0e, 0x1113, 0x2613, 0x1515, 0x4f26,
0x2d35, 0x4f35, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f, 0x4f4f,
0x4f4f, 0x4f4f, 0xff4f,
};
static u16 tables7[] = {
0xdbff, 0x4300, 0x0a00, 0x0707, 0x0708, 0x0a06, 0x0808, 0x0b08,
0x0a0a, 0x0e0b, 0x1018, 0x0d0e, 0x0e0d, 0x151d, 0x1116, 0x2318,
0x251f, 0x2224, 0x221f, 0x2621, 0x372b, 0x262f, 0x3429, 0x2129,
0x3022, 0x3141, 0x3934, 0x3e3b, 0x3e3e, 0x2e25, 0x4944, 0x3c43,
0x3748, 0x3e3d, 0xff3b,
0xdbff, 0x4300, 0x0a01, 0x0b0b, 0x0d0e, 0x1c0e, 0x1010, 0x3b1c,
0x2228, 0x3b28, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b, 0x3b3b,
0x3b3b, 0x3b3b, 0xff3b,
};
static u16 tables8[] = {
0xdbff, 0x4300, 0x0600, 0x0504, 0x0506, 0x0604, 0x0506, 0x0706,
0x0607, 0x0a08, 0x0a10, 0x090a, 0x0a09, 0x0e14, 0x0c0f, 0x1710,
0x1814, 0x1718, 0x1614, 0x1a16, 0x251d, 0x1a1f, 0x231b, 0x161c,
0x2016, 0x202c, 0x2623, 0x2927, 0x292a, 0x1f19, 0x302d, 0x282d,
0x2530, 0x2928, 0xff28,
0xdbff, 0x4300, 0x0701, 0x0707, 0x080a, 0x130a, 0x0a0a, 0x2813,
0x161a, 0x281a, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828, 0x2828,
0x2828, 0x2828, 0xff28,
};
static u16 tables9[] = {
0xdbff, 0x4300, 0x0300, 0x0202, 0x0203, 0x0302, 0x0303, 0x0403,
0x0303, 0x0504, 0x0508, 0x0405, 0x0504, 0x070a, 0x0607, 0x0c08,
0x0c0a, 0x0b0c, 0x0b0a, 0x0d0b, 0x120e, 0x0d10, 0x110e, 0x0b0e,
0x100b, 0x1016, 0x1311, 0x1514, 0x1515, 0x0f0c, 0x1817, 0x1416,
0x1218, 0x1514, 0xff14,
0xdbff, 0x4300, 0x0301, 0x0404, 0x0405, 0x0905, 0x0505, 0x1409,
0x0b0d, 0x140d, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414, 0x1414,
0x1414, 0x1414, 0xff14,
};
static u16 tables10[] = {
0xdbff, 0x4300, 0x0100, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0xff01,
0xdbff, 0x4300, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101,
0x0101, 0x0101, 0xff01,
};
switch (quality) {
case 0:
*size = sizeof(tables0);
return tables0;
case 1:
*size = sizeof(tables1);
return tables1;
case 2:
*size = sizeof(tables2);
return tables2;
case 3:
*size = sizeof(tables3);
return tables3;
case 4:
*size = sizeof(tables4);
return tables4;
case 5:
*size = sizeof(tables5);
return tables5;
case 6:
*size = sizeof(tables6);
return tables6;
case 7:
*size = sizeof(tables7);
return tables7;
case 8:
*size = sizeof(tables8);
return tables8;
case 9:
*size = sizeof(tables9);
return tables9;
case 10:
*size = sizeof(tables10);
return tables10;
default:
printk(KERN_WARNING "meye: invalid quality level %d - using 8\n", quality);
*size = sizeof(tables8);
return tables8;
}
return NULL;
}
/* return a generic set of huffman tables */
static u16 *jpeg_huffman_tables(int *size) {
static u16 tables[] = {
0xC4FF, 0xB500, 0x0010, 0x0102, 0x0303, 0x0402, 0x0503, 0x0405,
0x0004, 0x0100, 0x017D, 0x0302, 0x0400, 0x0511, 0x2112, 0x4131,
0x1306, 0x6151, 0x2207, 0x1471, 0x8132, 0xA191, 0x2308, 0xB142,
0x15C1, 0xD152, 0x24F0, 0x6233, 0x8272, 0x0A09, 0x1716, 0x1918,
0x251A, 0x2726, 0x2928, 0x342A, 0x3635, 0x3837, 0x3A39, 0x4443,
0x4645, 0x4847, 0x4A49, 0x5453, 0x5655, 0x5857, 0x5A59, 0x6463,
0x6665, 0x6867, 0x6A69, 0x7473, 0x7675, 0x7877, 0x7A79, 0x8483,
0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998, 0xA29A,
0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6, 0xB9B8,
0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4, 0xD7D6,
0xD9D8, 0xE1DA, 0xE3E2, 0xE5E4, 0xE7E6, 0xE9E8, 0xF1EA, 0xF3F2,
0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
0xC4FF, 0xB500, 0x0011, 0x0102, 0x0402, 0x0304, 0x0704, 0x0405,
0x0004, 0x0201, 0x0077, 0x0201, 0x1103, 0x0504, 0x3121, 0x1206,
0x5141, 0x6107, 0x1371, 0x3222, 0x0881, 0x4214, 0xA191, 0xC1B1,
0x2309, 0x5233, 0x15F0, 0x7262, 0x0AD1, 0x2416, 0xE134, 0xF125,
0x1817, 0x1A19, 0x2726, 0x2928, 0x352A, 0x3736, 0x3938, 0x433A,
0x4544, 0x4746, 0x4948, 0x534A, 0x5554, 0x5756, 0x5958, 0x635A,
0x6564, 0x6766, 0x6968, 0x736A, 0x7574, 0x7776, 0x7978, 0x827A,
0x8483, 0x8685, 0x8887, 0x8A89, 0x9392, 0x9594, 0x9796, 0x9998,
0xA29A, 0xA4A3, 0xA6A5, 0xA8A7, 0xAAA9, 0xB3B2, 0xB5B4, 0xB7B6,
0xB9B8, 0xC2BA, 0xC4C3, 0xC6C5, 0xC8C7, 0xCAC9, 0xD3D2, 0xD5D4,
0xD7D6, 0xD9D8, 0xE2DA, 0xE4E3, 0xE6E5, 0xE8E7, 0xEAE9, 0xF3F2,
0xF5F4, 0xF7F6, 0xF9F8, 0xFFFA,
0xC4FF, 0x1F00, 0x0000, 0x0501, 0x0101, 0x0101, 0x0101, 0x0000,
0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
0xFF0B,
0xC4FF, 0x1F00, 0x0001, 0x0103, 0x0101, 0x0101, 0x0101, 0x0101,
0x0000, 0x0000, 0x0000, 0x0201, 0x0403, 0x0605, 0x0807, 0x0A09,
0xFF0B
};
*size = sizeof(tables);
return tables;
}
/****************************************************************************/
/* MCHIP low-level functions */
/****************************************************************************/
/* waits for the specified miliseconds */
static inline void wait_ms(unsigned int ms) {
if (!in_interrupt()) {
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1 + ms * HZ / 1000);
}
else
mdelay(ms);
}
/* returns the horizontal capture size */
static inline int mchip_hsize(void) {
return meye.params.subsample ? 320 : 640;
}
/* returns the vertical capture size */
static inline int mchip_vsize(void) {
return meye.params.subsample ? 240 : 480;
}
/* waits for a register to be available */
static void mchip_sync(int reg) {
u32 status;
int i;
if (reg == MCHIP_MM_FIFO_DATA) {
for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
status = readl(meye.mchip_mmregs + MCHIP_MM_FIFO_STATUS);
if (!(status & MCHIP_MM_FIFO_WAIT)) {
printk(KERN_WARNING "meye: fifo not ready\n");
return;
}
if (status & MCHIP_MM_FIFO_READY)
return;
udelay(1);
}
}
else if (reg > 0x80) {
u32 mask = (reg < 0x100) ? MCHIP_HIC_STATUS_MCC_RDY
: MCHIP_HIC_STATUS_VRJ_RDY;
for (i = 0; i < MCHIP_REG_TIMEOUT; i++) {
status = readl(meye.mchip_mmregs + MCHIP_HIC_STATUS);
if (status & mask)
return;
udelay(1);
}
}
else
return;
printk(KERN_WARNING "meye: mchip_sync() timeout on reg 0x%x status=0x%x\n", reg, status);
}
/* sets a value into the register */
static inline void mchip_set(int reg, u32 v) {
mchip_sync(reg);
writel(v, meye.mchip_mmregs + reg);
}
/* get the register value */
static inline u32 mchip_read(int reg) {
mchip_sync(reg);
return readl(meye.mchip_mmregs + reg);
}
/* wait for a register to become a particular value */
static inline int mchip_delay(u32 reg, u32 v) {
int n = 10;
while (--n && mchip_read(reg) != v)
udelay(1);
return n;
}
/* setup subsampling */
static void mchip_subsample(void) {
mchip_set(MCHIP_MCC_R_SAMPLING, meye.params.subsample);
mchip_set(MCHIP_MCC_R_XRANGE, mchip_hsize());
mchip_set(MCHIP_MCC_R_YRANGE, mchip_vsize());
mchip_set(MCHIP_MCC_B_XRANGE, mchip_hsize());
mchip_set(MCHIP_MCC_B_YRANGE, mchip_vsize());
mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
}
/* set the framerate into the mchip */
static void mchip_set_framerate(void) {
mchip_set(MCHIP_HIC_S_RATE, meye.params.framerate);
}
/* load some huffman and quantisation tables into the VRJ chip ready
for JPEG compression */
static void mchip_load_tables(void) {
int i;
int size;
u16 *tables;
tables = jpeg_huffman_tables(&size);
for (i = 0; i < size / 2; i++)
writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
tables = jpeg_quantisation_tables(&size, meye.params.quality);
for (i = 0; i < size / 2; i++)
writel(tables[i], meye.mchip_mmregs + MCHIP_VRJ_TABLE_DATA);
}
/* setup the VRJ parameters in the chip */
static void mchip_vrj_setup(u8 mode) {
mchip_set(MCHIP_VRJ_BUS_MODE, 5);
mchip_set(MCHIP_VRJ_SIGNAL_ACTIVE_LEVEL, 0x1f);
mchip_set(MCHIP_VRJ_PDAT_USE, 1);
mchip_set(MCHIP_VRJ_IRQ_FLAG, 0xa0);
mchip_set(MCHIP_VRJ_MODE_SPECIFY, mode);
mchip_set(MCHIP_VRJ_NUM_LINES, mchip_vsize());
mchip_set(MCHIP_VRJ_NUM_PIXELS, mchip_hsize());
mchip_set(MCHIP_VRJ_NUM_COMPONENTS, 0x1b);
mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_LO, 0xFFFF);
mchip_set(MCHIP_VRJ_LIMIT_COMPRESSED_HI, 0xFFFF);
mchip_set(MCHIP_VRJ_COMP_DATA_FORMAT, 0xC);
mchip_set(MCHIP_VRJ_RESTART_INTERVAL, 0);
mchip_set(MCHIP_VRJ_SOF1, 0x601);
mchip_set(MCHIP_VRJ_SOF2, 0x1502);
mchip_set(MCHIP_VRJ_SOF3, 0x1503);
mchip_set(MCHIP_VRJ_SOF4, 0x1596);
mchip_set(MCHIP_VRJ_SOS, 0x0ed0);
mchip_load_tables();
}
/* setup for DMA transfers - also zeros the framebuffer */
static int mchip_dma_alloc(void) {
if (!meye.mchip_fbuffer) {
meye.mchip_fbuffer = ptable_alloc(MCHIP_NB_PAGES,
&meye.mchip_ptaddr);
if (!meye.mchip_fbuffer)
return -1;
}
return 0;
}
/* frees the DMA buffer */
static void mchip_dma_free(void) {
if (meye.mchip_fbuffer) {
ptable_free(meye.mchip_fbuffer, MCHIP_NB_PAGES);
meye.mchip_fbuffer = 0;
meye.mchip_ptaddr = 0;
}
}
/* sets the DMA parameters into the chip */
static void mchip_dma_setup(void) {
int i;
mchip_set(MCHIP_MM_PT_ADDR, meye.mchip_ptaddr);
for (i = 0; i < 4; i++)
mchip_set(MCHIP_MM_FIR(i), 0);
meye.mchip_fnum = 0;
}
/* stop any existing HIC action and wait for any dma to complete then
reset the dma engine */
static void mchip_hic_stop(void) {
int i = 0;
meye.mchip_mode = MCHIP_HIC_MODE_NOOP;
if (!(mchip_read(MCHIP_HIC_STATUS) & MCHIP_HIC_STATUS_BUSY))
return;
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP);
mchip_delay(MCHIP_HIC_CMD, 0);
while (!mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE)) {
/* resetting HIC */
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP);
mchip_delay(MCHIP_HIC_CMD, 0);
mchip_set(MCHIP_HIC_CTL, MCHIP_HIC_CTL_SOFT_RESET);
wait_ms(250);
if (i++ > 20) {
printk(KERN_ERR "meye: resetting HIC hanged!\n");
break;
}
}
wait_ms(100);
}
/****************************************************************************/
/* MCHIP frame processing functions */
/****************************************************************************/
/* get the next ready frame from the dma engine */
static u32 mchip_get_frame(void) {
u32 v;
v = mchip_read(MCHIP_MM_FIR(meye.mchip_fnum));
return v;
}
/* frees the current frame from the dma engine */
static void mchip_free_frame(void) {
mchip_set(MCHIP_MM_FIR(meye.mchip_fnum), 0);
meye.mchip_fnum++;
meye.mchip_fnum %= 4;
}
/* read one frame from the framebuffer assuming it was captured using
a uncompressed transfer */
static void mchip_cont_read_frame(u32 v, u8 *buf, int size) {
int pt_id;
int avail;
pt_id = (v >> 17) & 0x3FF;
avail = MCHIP_NB_PAGES - pt_id;
if (size > avail*PAGE_SIZE) {
memcpy(buf, meye.mchip_fbuffer + pt_id * PAGE_SIZE,
avail * PAGE_SIZE);
memcpy(buf +avail * PAGE_SIZE, meye.mchip_fbuffer,
size - avail * PAGE_SIZE);
}
else
memcpy(buf, meye.mchip_fbuffer + pt_id * PAGE_SIZE, size);
}
/* read a compressed frame from the framebuffer */
static int mchip_comp_read_frame(u32 v, u8 *buf, int size) {
int pt_start, pt_end, trailer;
int fsize, fsize2;
int i;
pt_start = (v >> 19) & 0xFF;
pt_end = (v >> 11) & 0xFF;
trailer = (v >> 1) & 0x3FF;
if (pt_end < pt_start) {
fsize = (MCHIP_NB_PAGES_MJPEG - pt_start) * PAGE_SIZE;
fsize2 = pt_end * PAGE_SIZE + trailer * 4;
if (fsize + fsize2 > size) {
printk(KERN_WARNING "meye: oversized compressed frame %d %d\n",
fsize, fsize2);
return -1;
} else {
memcpy(buf, meye.mchip_fbuffer + pt_start * PAGE_SIZE,
fsize);
memcpy(buf + fsize, meye.mchip_fbuffer, fsize2);
fsize += fsize2;
}
} else {
fsize = (pt_end - pt_start) * PAGE_SIZE + trailer * 4;
if (fsize > size) {
printk(KERN_WARNING "meye: oversized compressed frame %d\n",
fsize);
return -1;
} else
memcpy(buf, meye.mchip_fbuffer + pt_start * PAGE_SIZE,
fsize);
}
#ifdef MEYE_JPEG_CORRECTION
/* Some mchip generated jpeg frames are incorrect. In most
* (all ?) of those cases, the final EOI (0xff 0xd9) marker
* is not present at the end of the frame.
*
* Since adding the final marker is not enough to restore
* the jpeg integrity, we drop the frame.
*/
for (i = fsize - 1; i > 0 && buf[i] == 0xff; i--) ;
if (i < 2 || buf[i - 1] != 0xff || buf[i] != 0xd9)
return -1;
#endif
return fsize;
}
/* take a picture into SDRAM */
static void mchip_take_picture(void) {
int i;
mchip_hic_stop();
mchip_subsample();
mchip_dma_setup();
mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_CAP);
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
for (i = 0; i < 100; ++i) {
if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
break;
wait_ms(1);
}
}
/* dma a previously taken picture into a buffer */
static void mchip_get_picture(u8 *buf, int bufsize) {
u32 v;
int i;
mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_OUT);
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
for (i = 0; i < 100; ++i) {
if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
break;
wait_ms(1);
}
for (i = 0; i < 4 ; ++i) {
v = mchip_get_frame();
if (v & MCHIP_MM_FIR_RDY) {
mchip_cont_read_frame(v, buf, bufsize);
break;
}
mchip_free_frame();
}
}
/* start continuous dma capture */
static void mchip_continuous_start(void) {
mchip_hic_stop();
mchip_subsample();
mchip_set_framerate();
mchip_dma_setup();
meye.mchip_mode = MCHIP_HIC_MODE_CONT_OUT;
mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_OUT);
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
}
/* compress one frame into a buffer */
static int mchip_compress_frame(u8 *buf, int bufsize) {
u32 v;
int len = -1, i;
mchip_vrj_setup(0x3f);
udelay(50);
mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_COMP);
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
for (i = 0; i < 100; ++i) {
if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
break;
wait_ms(1);
}
for (i = 0; i < 4 ; ++i) {
v = mchip_get_frame();
if (v & MCHIP_MM_FIR_RDY) {
len = mchip_comp_read_frame(v, buf, bufsize);
break;
}
mchip_free_frame();
}
return len;
}
#if 0
/* uncompress one image into a buffer */
static int mchip_uncompress_frame(u8 *img, int imgsize, u8 *buf, int bufsize) {
mchip_vrj_setup(0x3f);
udelay(50);
mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_DECOMP);
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
return mchip_comp_read_frame(buf, bufsize);
}
#endif
/* start continuous compressed capture */
static void mchip_cont_compression_start(void) {
mchip_hic_stop();
mchip_vrj_setup(0x3f);
mchip_subsample();
mchip_set_framerate();
mchip_dma_setup();
meye.mchip_mode = MCHIP_HIC_MODE_CONT_COMP;
mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_CONT_COMP);
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
}
/****************************************************************************/
/* Interrupt handling */
/****************************************************************************/
static void meye_irq(int irq, void *dev_id, struct pt_regs *regs) {
u32 v;
int reqnr;
v = mchip_read(MCHIP_MM_INTA);
while (1) {
v = mchip_get_frame();
if (!(v & MCHIP_MM_FIR_RDY))
goto out;
switch (meye.mchip_mode) {
case MCHIP_HIC_MODE_CONT_OUT:
if (!meye_emptyq(&meye.grabq, NULL)) {
int nr = meye_pullq(&meye.grabq);
mchip_cont_read_frame(
v,
meye.grab_fbuffer + gbufsize * nr,
mchip_hsize() * mchip_vsize() * 2);
meye.grab_buffer[nr].state = MEYE_BUF_DONE;
wake_up_interruptible(&meye.grabq.proc_list);
}
break;
case MCHIP_HIC_MODE_CONT_COMP:
if (!meye_emptyq(&meye.grabq, &reqnr)) {
int size;
size = mchip_comp_read_frame(
v,
meye.grab_fbuffer + gbufsize * reqnr,
gbufsize);
if (size == -1)
break;
reqnr = meye_pullq(&meye.grabq);
meye.grab_buffer[reqnr].size = size;
meye.grab_buffer[reqnr].state = MEYE_BUF_DONE;
wake_up_interruptible(&meye.grabq.proc_list);
}
break;
default:
/* do not free frame, since it can be a snap */
goto out;
} /* switch */
mchip_free_frame();
}
out:
}
/****************************************************************************/
/* video4linux integration */
/****************************************************************************/
static int meye_open(struct video_device *dev, int flags) {
int i;
down(&meye.lock);
if (meye.open_count) {
up(&meye.lock);
return -EBUSY;
}
meye.open_count++;
if (mchip_dma_alloc()) {
printk(KERN_ERR "meye: mchip framebuffer allocation failed\n");
up(&meye.lock);
return -ENOBUFS;
}
mchip_hic_stop();
meye_initq(&meye.grabq);
for (i = 0; i < MEYE_MAX_BUFNBRS; i++)
meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
up(&meye.lock);
return 0;
}
static void meye_close(struct video_device *dev) {
down(&meye.lock);
meye.open_count--;
mchip_hic_stop();
up(&meye.lock);
}
static int meye_ioctl(struct video_device *dev, unsigned int cmd, void *arg) {
switch (cmd) {
case VIDIOCGCAP: {
struct video_capability b;
strcpy(b.name,meye.video_dev.name);
b.type = VID_TYPE_CAPTURE;
b.channels = 1;
b.audios = 0;
b.maxwidth = 640;
b.maxheight = 480;
b.minwidth = 320;
b.minheight = 240;
if(copy_to_user(arg,&b,sizeof(b)))
return -EFAULT;
break;
}
case VIDIOCGCHAN: {
struct video_channel v;
if(copy_from_user(&v, arg,sizeof(v)))
return -EFAULT;
v.flags = 0;
v.tuners = 0;
v.type = VIDEO_TYPE_CAMERA;
if (v.channel != 0)
return -EINVAL;
strcpy(v.name,"Camera");
if(copy_to_user(arg,&v,sizeof(v)))
return -EFAULT;
break;
}
case VIDIOCSCHAN: {
struct video_channel v;
if(copy_from_user(&v, arg,sizeof(v)))
return -EFAULT;
if (v.channel != 0)
return -EINVAL;
break;
}
case VIDIOCGPICT: {
struct video_picture p = meye.picture;
if(copy_to_user(arg, &p, sizeof(p)))
return -EFAULT;
break;
}
case VIDIOCSPICT: {
struct video_picture p;
if(copy_from_user(&p, arg,sizeof(p)))
return -EFAULT;
if (p.depth != 2)
return -EINVAL;
if (p.palette != VIDEO_PALETTE_YUV422)
return -EINVAL;
down(&meye.lock);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERABRIGHTNESS,
p.brightness >> 10);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERAHUE,
p.hue >> 10);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERACOLOR,
p.colour >> 10);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERACONTRAST,
p.contrast >> 10);
memcpy(&meye.picture, &p, sizeof(p));
up(&meye.lock);
break;
}
case VIDIOCSYNC: {
int i;
DECLARE_WAITQUEUE(wait, current);
if(copy_from_user((void *)&i,arg,sizeof(int)))
return -EFAULT;
if (i < 0 || i >= gbuffers)
return -EINVAL;
switch (meye.grab_buffer[i].state) {
case MEYE_BUF_UNUSED:
return -EINVAL;
case MEYE_BUF_USING:
add_wait_queue(&meye.grabq.proc_list, &wait);
current->state = TASK_INTERRUPTIBLE;
while (meye.grab_buffer[i].state == MEYE_BUF_USING) {
schedule();
if(signal_pending(current)) {
remove_wait_queue(&meye.grabq.proc_list, &wait);
current->state = TASK_RUNNING;
return -EINTR;
}
}
remove_wait_queue(&meye.grabq.proc_list, &wait);
current->state = TASK_RUNNING;
/* fall through */
case MEYE_BUF_DONE:
meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
}
break;
}
case VIDIOCMCAPTURE: {
struct video_mmap vm;
int restart = 0;
if(copy_from_user((void *) &vm, (void *) arg, sizeof(vm)))
return -EFAULT;
if (vm.frame >= gbuffers || vm.frame < 0)
return -EINVAL;
if (vm.format != VIDEO_PALETTE_YUV422)
return -EINVAL;
if (vm.height * vm.width * 2 > gbufsize)
return -EINVAL;
if (!meye.grab_fbuffer)
return -EINVAL;
if (meye.grab_buffer[vm.frame].state != MEYE_BUF_UNUSED)
return -EBUSY;
down(&meye.lock);
if (vm.width == 640 && vm.height == 480) {
if (meye.params.subsample) {
meye.params.subsample = 0;
restart = 1;
}
}
else if (vm.width == 320 && vm.height == 240) {
if (!meye.params.subsample) {
meye.params.subsample = 1;
restart = 1;
}
}
else {
up(&meye.lock);
return -EINVAL;
}
if (restart || meye.mchip_mode != MCHIP_HIC_MODE_CONT_OUT)
mchip_continuous_start();
meye.grab_buffer[vm.frame].state = MEYE_BUF_USING;
meye_pushq(&meye.grabq, vm.frame);
up(&meye.lock);
break;
}
case VIDIOCGMBUF: {
struct video_mbuf vm;
int i;
memset(&vm, 0 , sizeof(vm));
vm.size = gbufsize * gbuffers;
vm.frames = gbuffers;
for (i = 0; i < gbuffers; i++)
vm.offsets[i] = i * gbufsize;
if(copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
return -EFAULT;
break;
}
case MEYEIOC_G_PARAMS: {
if (copy_to_user(arg, &meye.params, sizeof(meye.params)))
return -EFAULT;
break;
}
case MEYEIOC_S_PARAMS: {
struct meye_params jp;
if (copy_from_user(&jp, arg, sizeof(jp)))
return -EFAULT;
if (jp.subsample > 1)
return -EINVAL;
if (jp.quality > 10)
return -EINVAL;
if (jp.sharpness > 63 || jp.agc > 63 || jp.picture > 63)
return -EINVAL;
if (jp.framerate > 31)
return -EINVAL;
down(&meye.lock);
if (meye.params.subsample != jp.subsample ||
meye.params.quality != jp.quality)
mchip_hic_stop(); /* need restart */
memcpy(&meye.params, &jp, sizeof(jp));
sonypi_camera_command(SONYPI_COMMAND_SETCAMERASHARPNESS,
meye.params.sharpness);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERAAGC,
meye.params.agc);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERAPICTURE,
meye.params.picture);
up(&meye.lock);
break;
}
case MEYEIOC_QBUF_CAPT: {
int nb;
if (copy_from_user((void *) &nb, (void *) arg, sizeof(int)))
return -EFAULT;
if (!meye.grab_fbuffer)
return -EINVAL;
if (nb >= gbuffers)
return -EINVAL;
if (nb < 0) {
/* stop capture */
mchip_hic_stop();
return 0;
}
if (meye.grab_buffer[nb].state != MEYE_BUF_UNUSED)
return -EBUSY;
down(&meye.lock);
if (meye.mchip_mode != MCHIP_HIC_MODE_CONT_COMP)
mchip_cont_compression_start();
meye.grab_buffer[nb].state = MEYE_BUF_USING;
meye_pushq(&meye.grabq, nb);
up(&meye.lock);
break;
}
case MEYEIOC_SYNC: {
int i;
DECLARE_WAITQUEUE(wait, current);
if(copy_from_user((void *)&i,arg,sizeof(int)))
return -EFAULT;
if (i < 0 || i >= gbuffers)
return -EINVAL;
switch (meye.grab_buffer[i].state) {
case MEYE_BUF_UNUSED:
return -EINVAL;
case MEYE_BUF_USING:
add_wait_queue(&meye.grabq.proc_list, &wait);
current->state = TASK_INTERRUPTIBLE;
while (meye.grab_buffer[i].state == MEYE_BUF_USING) {
schedule();
if(signal_pending(current)) {
remove_wait_queue(&meye.grabq.proc_list, &wait);
current->state = TASK_RUNNING;
return -EINTR;
}
}
remove_wait_queue(&meye.grabq.proc_list, &wait);
current->state = TASK_RUNNING;
/* fall through */
case MEYE_BUF_DONE:
meye.grab_buffer[i].state = MEYE_BUF_UNUSED;
}
i = meye.grab_buffer[i].size;
if (copy_to_user(arg, (void *)&i, sizeof(int)))
return -EFAULT;
break;
}
case MEYEIOC_STILLCAPT: {
if (!meye.grab_fbuffer)
return -EINVAL;
if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED)
return -EBUSY;
down(&meye.lock);
meye.grab_buffer[0].state = MEYE_BUF_USING;
mchip_take_picture();
mchip_get_picture(
meye.grab_fbuffer,
mchip_hsize() * mchip_vsize() * 2);
meye.grab_buffer[0].state = MEYE_BUF_DONE;
up(&meye.lock);
break;
}
case MEYEIOC_STILLJCAPT: {
int len = -1;
if (!meye.grab_fbuffer)
return -EINVAL;
if (meye.grab_buffer[0].state != MEYE_BUF_UNUSED)
return -EBUSY;
down(&meye.lock);
meye.grab_buffer[0].state = MEYE_BUF_USING;
while (len == -1) {
mchip_take_picture();
len = mchip_compress_frame(meye.grab_fbuffer, gbufsize);
}
meye.grab_buffer[0].state = MEYE_BUF_DONE;
up(&meye.lock);
if (copy_to_user(arg, (void *)&len, sizeof(int)))
return -EFAULT;
break;
}
default:
return -ENOIOCTLCMD;
} /* switch */
return 0;
}
static int meye_mmap(struct video_device *dev, const char *adr,
unsigned long size) {
unsigned long start=(unsigned long) adr;
unsigned long page,pos;
down(&meye.lock);
if (size > gbuffers * gbufsize) {
up(&meye.lock);
return -EINVAL;
}
if (!meye.grab_fbuffer) {
/* lazy allocation */
meye.grab_fbuffer = rvmalloc(gbuffers*gbufsize);
if (!meye.grab_fbuffer) {
printk(KERN_ERR "meye: v4l framebuffer allocation failed\n");
up(&meye.lock);
return -ENOMEM;
}
}
pos = (unsigned long)meye.grab_fbuffer;
while (size > 0) {
page = kvirt_to_pa(pos);
if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED)) {
up(&meye.lock);
return -EAGAIN;
}
start += PAGE_SIZE;
pos += PAGE_SIZE;
size -= PAGE_SIZE;
}
up(&meye.lock);
return 0;
}
static struct video_device meye_template = {
owner: THIS_MODULE,
name: "meye",
type: VID_TYPE_CAPTURE,
hardware: VID_HARDWARE_MEYE,
open: meye_open,
close: meye_close,
ioctl: meye_ioctl,
mmap: meye_mmap,
};
static int __devinit meye_probe(struct pci_dev *pcidev,
const struct pci_device_id *ent) {
int ret;
unsigned long mchip_adr;
u8 revision;
if (meye.mchip_dev != NULL) {
printk(KERN_ERR "meye: only one device allowed!\n");
ret = -EBUSY;
goto out1;
}
sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 1);
meye.mchip_dev = pcidev;
meye.mchip_irq = pcidev->irq;
memcpy(&meye.video_dev, &meye_template, sizeof(meye_template));
if (mchip_dma_alloc()) {
printk(KERN_ERR "meye: mchip framebuffer allocation failed\n");
ret = -ENOMEM;
goto out2;
}
if ((ret = pci_enable_device(meye.mchip_dev))) {
printk(KERN_ERR "meye: pci_enable_device failed\n");
goto out3;
}
mchip_adr = pci_resource_start(meye.mchip_dev,0);
if (!mchip_adr) {
printk(KERN_ERR "meye: mchip has no device base address\n");
ret = -EIO;
goto out4;
}
if (!request_mem_region(pci_resource_start(meye.mchip_dev, 0),
pci_resource_len(meye.mchip_dev, 0),
"meye")) {
ret = -EIO;
printk(KERN_ERR "meye: request_mem_region failed\n");
goto out4;
}
pci_read_config_byte(meye.mchip_dev, PCI_REVISION_ID, &revision);
pci_set_master(meye.mchip_dev);
pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8);
pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64);
if ((ret = request_irq(meye.mchip_irq, meye_irq,
SA_INTERRUPT | SA_SHIRQ, "meye", meye_irq))) {
printk(KERN_ERR "meye: request_irq failed (ret=%d)\n", ret);
goto out5;
}
meye.mchip_mmregs = ioremap(mchip_adr, MCHIP_MM_REGS);
if (!meye.mchip_mmregs) {
printk(KERN_ERR "meye: ioremap failed\n");
ret = -EIO;
goto out6;
}
/* Ask the camera to perform a soft reset. */
pci_write_config_word(meye.mchip_dev, MCHIP_PCI_SOFTRESET_SET, 1);
mchip_delay(MCHIP_HIC_CMD, 0);
mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE);
wait_ms(1);
mchip_set(MCHIP_VRJ_SOFT_RESET, 1);
wait_ms(1);
mchip_set(MCHIP_MM_PCI_MODE, 5);
wait_ms(1);
mchip_set(MCHIP_MM_INTA, MCHIP_MM_INTA_HIC_1_MASK);
if (video_register_device(&meye.video_dev, VFL_TYPE_GRABBER, video_nr) < 0) {
printk(KERN_ERR "meye: video_register_device failed\n");
ret = -EIO;
goto out7;
}
printk(KERN_INFO "meye: Motion Eye Camera Driver v%d.%d.\n",
MEYE_DRIVER_MAJORVERSION,
MEYE_DRIVER_MINORVERSION);
printk(KERN_INFO "meye: mchip KL5A72002 rev. %d, base %lx, irq %d\n",
revision, mchip_adr, meye.mchip_irq);
/* init all fields */
init_MUTEX(&meye.lock);
meye.picture.depth = 2;
meye.picture.palette = VIDEO_PALETTE_YUV422;
meye.picture.brightness = 32 << 10;
meye.picture.hue = 32 << 10;
meye.picture.colour = 32 << 10;
meye.picture.contrast = 32 << 10;
meye.picture.whiteness = 0;
meye.params.subsample = 0;
meye.params.quality = 7;
meye.params.sharpness = 32;
meye.params.agc = 48;
meye.params.picture = 0;
meye.params.framerate = 0;
sonypi_camera_command(SONYPI_COMMAND_SETCAMERABRIGHTNESS, 32);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERAHUE, 32);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERACOLOR, 32);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERACONTRAST, 32);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERASHARPNESS, 32);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERAPICTURE, 0);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERAAGC, 48);
return 0;
out7:
iounmap(meye.mchip_mmregs);
out6:
free_irq(meye.mchip_irq, meye_irq);
out5:
release_mem_region(pci_resource_start(meye.mchip_dev, 0),
pci_resource_len(meye.mchip_dev, 0));
out4:
pci_disable_device(meye.mchip_dev);
out3:
mchip_dma_free();
out2:
sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 0);
out1:
return ret;
}
static void __devexit meye_remove(struct pci_dev *pcidev) {
video_unregister_device(&meye.video_dev);
mchip_hic_stop();
/* disable interrupts */
mchip_set(MCHIP_MM_INTA, 0x0);
free_irq(meye.mchip_irq, meye_irq);
iounmap(meye.mchip_mmregs);
release_mem_region(pci_resource_start(meye.mchip_dev, 0),
pci_resource_len(meye.mchip_dev, 0));
pci_disable_device(meye.mchip_dev);
mchip_dma_free();
if (meye.grab_fbuffer)
rvfree(meye.grab_fbuffer, gbuffers*gbufsize);
sonypi_camera_command(SONYPI_COMMAND_SETCAMERA, 0);
printk(KERN_INFO "meye: removed\n");
}
static struct pci_device_id meye_pci_tbl[] __devinitdata = {
{ PCI_VENDOR_ID_KAWASAKI, PCI_DEVICE_ID_MCHIP_KL5A72002,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ }
};
MODULE_DEVICE_TABLE(pci, meye_pci_tbl);
static struct pci_driver meye_driver = {
name: "meye",
id_table: meye_pci_tbl,
probe: meye_probe,
remove: __devexit_p(meye_remove),
};
static int __init meye_init_module(void) {
if (gbuffers < 2)
gbuffers = 2;
if (gbuffers > MEYE_MAX_BUFNBRS)
gbuffers = MEYE_MAX_BUFNBRS;
if (gbufsize < 0 || gbufsize > MEYE_MAX_BUFSIZE)
gbufsize = MEYE_MAX_BUFSIZE;
printk(KERN_INFO "meye: using %d buffers with %dk (%dk total) for capture\n",
gbuffers, gbufsize/1024, gbuffers*gbufsize/1024);
return pci_module_init(&meye_driver);
}
static void __exit meye_cleanup_module(void) {
pci_unregister_driver(&meye_driver);
}
MODULE_AUTHOR("Stelian Pop <stelian.pop@fr.alcove.com>");
MODULE_DESCRIPTION("video4linux driver for the MotionEye camera");
MODULE_LICENSE("GPL");
EXPORT_NO_SYMBOLS;
MODULE_PARM(gbuffers,"i");
MODULE_PARM_DESC(gbuffers,"number of capture buffers, default is 2 (32 max)");
MODULE_PARM(gbufsize,"i");
MODULE_PARM_DESC(gbufsize,"size of the capture buffers, default is 614400");
MODULE_PARM(video_nr,"i");
MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)");
/* Module entry points */
module_init(meye_init_module);
module_exit(meye_cleanup_module);
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